Showing papers in "Journal of Catalysis in 2020"

TL;DR: In this paper, an asymmetrical dual-metal dimer catalytic center, which is inspired by the active sites of natural enzymes, such as nitrogenases, that efficiently catalyze the reduction of N2 to NH3 through FeMo cofactors, is theoretically reported.

TL;DR: In this paper, a top-down de-alloying synthetic method was proposed to controllably incorporate five immiscible metals in one nanoscale solid phase, including four elements (Al, Cu, Ni and Pt) and alternating the fifth element including Pd, V, Co, Mn, etc.

TL;DR: In this paper, a series of Ni-Cu alloy catalysts (NiCux/C) were prepared by pyrolyzing NiCux-BTC (a MOF containing Cu and Ni) precursors.

TL;DR: In this paper, a well-dispersed and ultrasmall PtZn bimetallic nanoclusters encapsulated in silicalite-1 (S-1) zeolites are prepared via a facile in situ synthesis strategy.

TL;DR: In this article, first-principles theoretical calculations according to density functional theory (DFT) combined with experimental research is researched to develop different transition metals ions (M = Fe, Ni, Zn and Mo) doped into Co 9S8 (M-Co9S8) for enhancing overall water splitting activity.

TL;DR: In this article, a sheet-shaped Co-Al2O3 catalyst comprising of isolate Co2+ sites shows a high intrinsic activity (specific reaction rate ≥ 16mmolg−1 h−1) and catalytic stability in highly selective PDH reaction (>97% C3H6 selectivity).

TL;DR: In this paper, a sulfonated iron phthalocyanine pyrolysis strategy was used to synthesize Fe, N, and S tri-doped graphene nanohybrids, and this hybrid was utilized as the catalyst support for highly efficient Pt nanodendrites.

TL;DR: In this paper, a series of NiFe catalysts derived from hydrotalcite precursors were investigated, and in situ x-ray diffraction (XRD) analysis revealed that small NiFe alloy particles were formed and remained stable during reaction.

TL;DR: In this article, the integrated molar absorption coefficients of Py complexes with Bronsted and Lewis acid sites were determined and the validity of the Beer-Lambert-Bouguer law for IR characterisation of solid acids was demonstrated.

TL;DR: In this article, the existence of highly dispersed CoOx species is identified, and the easily reducible Co Ox species are confined in the created T-sites (silanols) of SiBeta support.

TL;DR: In this article, the authors reported the design and synthesis of oxygen vacancies engineered CoMoO4 nanosheet arrays grown on three-dimensional (3D) porous Ni foam (NF) support by hydrothermal synthesis followed by reducing gas heat treatment used H2 or NH3, and explored their practical application as bifunctional electrocatalysts for water splitting.

TL;DR: In this paper, Na-promoted cobalt catalysts supported on different materials (Al 2 O 3, ZnO, AC, TiO 2, SiO 2, and Si 3 N 4 ) were evaluated to elucidate the effects of supports.

TL;DR: In this paper, a Schottky barrier is established between Ti3C2 and TiO2 nanowires to improve the separation efficiency of photogenerated electrons and holes.

TL;DR: The structure of γ-Al2O3, the most important catalyst support, is still under discussion; especially the positions of the Al3+cations and vacancies are debated as discussed by the authors.

TL;DR: In this paper, the authors have successfully fabricated all-solid-state Z-scheme ternary photocatalysts, consisting of two isolated photochemical systems of graphitic carbon nitride (g-C3N4) and three-dimensional ordered macroporous carbon-coated TiO2 (3DOM-TiO2@C) combined with Pt nanoparticles as electron-transfer system.

TL;DR: In this paper, a significant amount of liquid products from electrochemical CO2 reduction (CO2RR) in a flow reactor can cross the gas diffusion electrode (GDE) and anion exchange membrane (AEM).

TL;DR: In this article, a highly efficient, robust and stable Cu/SiO2 catalyst for the non-oxidative dehydrogenation of ethanol prepared by the ammonia evaporation method was reported.

TL;DR: A magnetic metal-organic framework, γ-Fe2O3@SiO2/IRMOF-3, has been prepared and characterized in this article for the synthesis of cyclohexenone derivatives by reaction of aldehyde and acetoacetanilide.

TL;DR: In this article, a template-assisted growth and pyrolysis of single-crystalline zeolite imidazolate framework-8 (ZIF-8) in three-dimensional ordered template voids is proposed to create hierarchical porosity in MOFs-derived N-doped carbon materials.

TL;DR: In this paper, a series of CuAl-layered double oxide/carbon nanotubes-x (CuAl-LDO/CNTs-x) nanocatalysts with a tunable valence distribution of highly dispersed CuOx species was constructed from the topotactic transformation of the precursors and a controllable carbothermal reduction reaction.

TL;DR: In this paper, a Co2P/CoP hybrid was synthesized from cobalt carbonate hydroxide (CoCH) precursor, and further evaluated for the electrocatalytic hydrogen oxidation reaction and hydrogen evolution reaction in alkaline electrolytes.

TL;DR: A series of ternary copper-cerium-zirconium catalysts containing two kinds of copper species, surface CuO and Cu-Ce-Zr solid solution, are prepared and studied for catalytic properties of CO2 hydrogenation to methanol.

TL;DR: In this article, the promotional effect of MnO on Ni catalysts supported on silica-modified γ-Al2O3 (SA) was investigated in CO2 and CO methanation on catalysts with Mn/Ni atomic ratios between 0 and 0.25.

TL;DR: Inspired by molybdoenzymes, a single-atom Mo-O/N-C catalyst was proposed in this paper, which achieved state-of-the-art performance.

TL;DR: In this article, the effect of adding H2O in the feed gas on the activity and selectivity of In2O3/ZrO2 catalysts for CO2 hydrogenation to methanol was studied using combined experimentatal and computational efforts.

TL;DR: In this paper, dinaphthobarrelene backbone-based α-diimine nickel and palladium complexes with the constrained space were designed and synthesized from the viewpoint of 3D space.

TL;DR: In this paper, it was shown that the rates, reaction orders and activation energies for TCH and ECH of phenol and benzaldehyde on Pd, Pt, and Rh can be explained with a simple kinetic model based on similar Langmuir-Hinshelwood mechanisms.

TL;DR: In this paper, a series of heterogonous NiZn alloy supported on the mixed metal oxides (MMO) were synthesized derived from layered double hydroxides (LDHs) with various Ni/Zn ratio (3/1, 1/1 or 1/3).

TL;DR: In this paper, a layered borosilicate zeolite was demonstrated as highly active and selective catalyst for the oxidative dehydrogenation of propane, showing a propylene selectivity of 83.6% and the total light olefins (propylene and ethylene) selectivities of 91.9%.

TL;DR: In this paper, self-supported NbSe2 nanosheet arrays have been prepared and tested as electrocatalysts for NH3 electrosynthesis with a Faradaic efficiency of 13.9% at −0.4